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Finding the Fourth Proportional to 253,158.32, 349,365.48 and 139,985.12

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Solution

The fourth proportional to 253,158.32, 349,365.48 and 139,985.12 is: 193,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,158.32 : 349,365.48 = 139,985.12 : x
  2. Step 2: Convert to fraction form
    253,158.32/349,365.48 = 139,985.12/x
  3. Step 3: Cross multiply
    253,158.32x = 349,365.48 × 139,985.12
  4. Step 4: Simplify right side
    253,158.32x = 48,905,968,641.66
  5. Step 5: Solve for x
    x = 48,905,968,641.66/253,158.32
  6. Step 6: Final answer
    x = 193,183.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.